Yeah, I noticed that too. I read somewhere that the writers realized their mistake because they spoke about it at the link.

Hey there was another error - In "The Secret" in season 2, Jim told Pam that he had a crush on her when she first started working there, implying that he was working there first, but in the 4th season episode "Launch Party" when Pam asked Jim when he knew he liked her, he said that it was on his first day when she showed him to his desk and introduced him to dwight, implying she was working there first. So who worked there first????

Yeah a lot of people noticed that one too, loopygiggles, but I don't think it's ever been cleared up.

In "The Christmas Party" Kelly kisses Dwight. Dwight says she shouldn't do that. "AMANDA is supposed to do that." Who is AMANDA? I think he was supposed to say ANGELA. Oops.

No, he said "a man is" not "Amanda."

In the episode "Job Fair" pam thinks back on her gym class and explains how she used to use pms to get out of various sports, including volleyball. However, in the episode "Company Picnic" she displays exceptional volleyball skills and said that she played in highschool, in junior high, college and went to volleyball camp. Tsk tsk.

In episode 23 of season 5, Michael, Pam and Ryan meet with Charles and David in the the conference room next to Charles' office. After being made the offer of $60,000, Michael asks to have the room to confer with Pam and Ryan. In the next scene, Dwight is seen talking to an old client. The camera pans to Jim sitting as his desk with the conference room in the background. Not only is the door to the conference room completely open, no one is in it, it is set up completely differently than when Michael and the others were seen sitting in it and the table which was in the middle of the room is now missing as well as the TV and the poster boards which are seen behind David as he stands to leave the room in the previous scene. A few scenes later, Michael Pam and Ryan are seen sitting in the conference room again with everything back to how it was.

In season 1, episode 4, "The Alliance"....Michael assigns Pam to find the person with the closest birthday. And Pam tells him that Meredith's is the closest but "it isn't until next month"....but in season 4, episode 7, "Survivor Man"....Angela says that it is "Birthday Month" and that Kelly's was last week, Creed's is today, Oscar's is the week after next, and Meredith's is at the end of the month....so either Pam didn't see those other birthdays, or there is an error....I think that it is an error

She could just be what the men used to call "a woman of loose morals"
link

Also, in episode 16 of season 6 (Manager and the Salesman) Michael messes u Jim's hair & Jim leaves it messy while they're speaking with Jo. After jo announces Jim will be the manager, Michael stands up to go and Jim's hair is perfect... O.O

In the episode when Meridith gets back from the hospital after Micheal hits her with his car, Meridith askes Jim to sign he pelvis cast (lol that was hilarious) but in "Spooked", the Halloween episode of Season 8, Meridith tells Robert California that Jim "givves her the creeps". ?????

In the episode when Jim and Pam are going to Dwight's beet farm, while Mose is running next to their car, there is a camera man sitting in the back seat however he is not there when they show the car pulling up from camera 2

In the first Christmas episode, Jim's secret Santa gift to Pam is the teapot with which he includes a card "because at Christmas you tell people how you feel", and then he sneaks the card back while Pam is distracted. But in the series finale when Jim finally gives Pam the card to prove to her how he always felt, the cover of the card reads "Happy Birthday", nothing to do with Christmas.

In the second season, I believe, when Jim gets Pam the teapot, he goes into detail about what he fills it with and why...the hot sauce packet, the old yearbook pic of him, etc. But then, in the finale during the Q&A panel, someone asked Pam what was in the teapot and she said she would rather keep that secret. But it wasn't a secret; Jim told us in "Christmas Party" 2:10.

When Andy proposed to Angela his parents are there supporting him. They're super excited but then when we meet them at Andy's garden party they don't like him at all/embarrassed. (And they're different actors) Also, when we first meet Pam's mom that's a different actress then when we met her again at Jim and Pam's wedding.